Home / 28,186.92-38,898.54-15,611.67

Finding the Fourth Proportional to 28,186.92, 38,898.54 and 15,611.67

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Solution

The fourth proportional to 28,186.92, 38,898.54 and 15,611.67 is: 21,544.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.92 : 38,898.54 = 15,611.67 : x
  2. Step 2: Convert to fraction form
    28,186.92/38,898.54 = 15,611.67/x
  3. Step 3: Cross multiply
    28,186.92x = 38,898.54 × 15,611.67
  4. Step 4: Simplify right side
    28,186.92x = 607,271,169.96
  5. Step 5: Solve for x
    x = 607,271,169.96/28,186.92
  6. Step 6: Final answer
    x = 21,544.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.